The process of crossing over occurs during which phase of meiosis?
A. Diakinesis
B. Diplotene
C. Pachytene
D. Zygotene
E. Leptotene
C
Biology & Microbiology
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A substance that speeds up reactions in your body is known as
A) a placebo B) fiber C) a vitamin D) an enzyme
Biology & Microbiology
DNA is cut by ____
a. nucleases b. proteases c. stem cells d. Ti plasmids e. restriction fragment length polymorphisms
Biology & Microbiology
Replacing a patient's defective gene with a fragment containing a functional gene is
A) gene therapy. B) genomics. C) gene cloning. D) gene mapping. E) gene selection.
Biology & Microbiology
Secondary metabolites are often useful, and are obtained by
A) harvesting a culture during log phase. B) allowing a culture to enter stationary phase. C) growing a culture at sub-optimal temperature. D) adding chemicals that alter metabolic pathways. E) using continuous flow culturing.
Biology & Microbiology